The system uses the triangle survey principle to realize threedimensionalpositioning and uses the rich lookup table structure of FPGA to complete the algorithm.
该系统采用三角形测量原理实现三维精确定位，利用FPGA丰富的查找表结构完成算法。
2
Other examples of direct manipulation are the resizing of a graphic object in a drawing application and the positioning of an object or camera view in a three-dimensional scene.
其他的一些直接操作的例子如在画图类的程序中调整图像的大小，在三维场景中移动对象和视角等。
3
Objective: To approach the feasibility of the three-dimensionalpositioning and navigation with regular catheter electrodes in intracavitary with a low-frequency electrical field.